When I connect to the gateway or portal, I'm using IP:3000 though, not www.tyk-portal-test.com:3000 since I have no browser on the local server, is it important ?

About "other features" I don't know why u mean, I'm just trying to see some APIs through developer portal and if possible interact with them with some "try it out" UI, are there some other main features ?

Ok, I was trying to give a chance to Tyk in my evaluation of open source API management tools for my company (EDF - Electricité De France), but if the most straight-forward way of installation is not operational, and just no one cares, I'll just have to recommend a more mature tool like WSO2 (you unzip it, your start it, and you can add your API right after that, the support is only needed for advanced use cases).

I'm sorry that the community forum didn't provide a response in the time that you were expecting it in, please remember that this is a community forum, and where possible, we try to reply to everyone in a timely basis (but not necessarily over the weekend)

As for the issue you are facing, the problem is right there in the logs:

To fix it, you simply need to visit the Portal -> Settings page in your dashboard (you will see a notification that says that a configuration has been created for you), this creates your portal definition and gets the whole system bootstrapped. We'll update the docs for this step as it does trip some users up.

You will need to delete and re-create your portal catalogue entries though.

Tyk is an API Management platform of which the portal is one small part, you do not need the portal, the catalogue or any of those features to manage APIs or tokens (in fact, it's one of the more complex and tricky ways to get started!), so it might be the case that your evaluation started at the more complex end of Tyk.